Interesting post at Marginal Revolution (a site I hadn't seen before, and about which I know nothing) reporting on a study reporting that the gender gap among tenured professors can be entirely explained by fertility decisions. What makes the Marginal Revolution post really interesting is the comments, which claim that the Survey of Doctorate Recipients data the study is based on is inaccurate, because doctoral candidates routinely lie when filling in the survey. And around and around we go...